document.write( "Question 1002834: Dear Tutor,\r
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document.write( "I have two z scores that I need to find area but the z table only goes up to 3.4
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document.write( "Is there any other way I can find area for z scores for - 4.4721 and 4.4721?
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document.write( "Thank you in advance. \n" );
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Algebra.Com's Answer #619731 by Edwin McCravy(20060)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "The reason the normal table only goes up to z=3.4 is because\r\n" ); document.write( "the area under the normal curve to the right of 3.4 and to\r\n" ); document.write( "the left of -3.4 is so small that it is negligible, and for all\r\n" ); document.write( "practical statistical purposes is equal to zero.\r\n" ); document.write( "\r\n" ); document.write( "So the area to the left of -4.4721 is for all practical statistical\r\n" ); document.write( "purposes is 0, and thus the area to the left is 0. Practically \r\n" ); document.write( "all the area to the left of it is included. Notice on the graph of \r\n" ); document.write( "the normal curve that the two green lines show where -4.4721 and \r\n" ); document.write( "4.4721 are located. The red lines are at 3.4 and -3.4. They show why \r\n" ); document.write( "there is no use for tables to include z-scores beyond them, since the \r\n" ); document.write( "area beyond them is so small.\r\n" ); document.write( "\r\n" ); document.write( "\n" ); document.write( " |